Chapter 255: Cultivation 9 The room had been enchanted with a folding spell, making the space exceptionally large once inside. Ren Xin decided she absolutely had to master this technique; it was simply too useful. "Book Spirit secretary, take a note of this idea and remind me later!" The Book Spirit secretary was unwilling to take the order and responded by farting at Shen Shen. Ren Xin: "..." Did it really think that just because it changed its skin, it had become a national…